Alvina Dor-Yan Chu, M.D.
Rheumatology Physician · Palo Alto, CA
Alvina Dor-Yan Chu, M.D. is a rheumatology physician with a practice address in Palo Alto, California, and NPI 1538355375, issued on Sep 14, 2007. Check the license (California A89065, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alvina Dor-Yan Chu
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- A89065 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Welch RD Ste 203, Palo Alto, CA 94304
- Phone
- (650) 723-6961
- Enumerated
- Sep 14, 2007
- Record last updated
- Apr 28, 2024
- Medicare enrollment
- Enrolled (PECOS I20100826000459); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Buffalo School Of Medicine, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 1000 Welch RD Ste 203
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jungsik Song, MDRheumatology Physician1144416371
Verify Alvina Dor-Yan Chu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A89065Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average rheumatology physician in 2024
104 Medicare Part D claims for 18 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Hydroxychloroquine Sulfate32 claims
- Methotrexate13 claims
- Prednisone13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Alvina Dor-Yan Chu among 926 rheumatology physician records in California
Alvina Dor-Yan Chu, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 42% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2002 · median 2003 among the 641 with a school on file
- Record last updated2024 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Palo Alto → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Lorinda Chung, MDPalo Alto, CA 943041427026442
- Robert Fairchild, M.D., PH.D.Palo Alto, CA 943041255607214
- James Fries, M.D.Palo Alto, CA 943041922140367
- Johannes Nowatzky, M.D.Palo Alto, CA 943041780813543
- Jeremy Sokolove, M.D.Palo Alto, CA 943041396718854
- Jungsik Song, MDPalo Alto, CA 943041144416371
- Mark Genovese, M.D.Stanford, CA 943051487711875
- Jorg Goronzy, M.D.Stanford, CA 943051720097124
Common questions
What is Alvina Dor-Yan Chu, M.D.'s NPI number?
Alvina Dor-Yan Chu, M.D.'s National Provider Identifier (NPI) is 1538355375, issued on Sep 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Alvina Dor-Yan Chu, M.D. located?
The NPPES record lists a practice address at 1000 Welch RD Ste 203, Palo Alto, CA, 94304. Phone: (650) 723-6961. Providers update this record themselves, so call before visiting.
How can I verify Alvina Dor-Yan Chu, M.D.'s license?
NPPES lists California license number A89065, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alvina Dor-Yan Chu, M.D. prescribe under Medicare Part D?
In 2024, Alvina Dor-Yan Chu, M.D. had 104 Medicare Part D claims for 18 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Alvina Dor-Yan Chu, M.D.'s MIPS final score?
The 2023 MIPS final score is 76.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.